Lateral-motion appliance for locomotive driving boxes



-A. W. BRUCE.

LATERAL MOTION APPLIANCE FOR LOCOMOTIVE DRIVING BOXES.

APPLICATION FILED Aue.1B.-19 2x.

1,414,455, Patented May 2,1922.

2 SHEETS-SHEET I.

A. w. BRucg. LATERAL MOTION APPLIANCE FOR LOCOMOTIVE DRIVING BOXES.

APPLICATION FILED AUG.I8| I921.

2 SHEETS-SHEET 2' 1,414,455, Patented May 2, 1922.

fully setforth.

STATESPATEN'T OFFER ALFRED w. BRUCE, or NEW YORK, N. Y. Y

LATERAL-MOTION APPLIANCE FOR LOCOMOTIVE DRIVING BOXES.

The object of invention is to providemeans for affording and controlling lateral motion inthe driving boxes of locomotive engines, which-shall be of simple,,and inexpensive constructiomand of ready applicability in locomotives of the various pres ent standard types, with the result of 'enabling a locomotive, having a comparatively long rigid wheel base, to pass through curves of comparatively short radius, without liability to derailment, and without inducing undue or excessive wear of wheel flanges andrails." r i i .The' improvement"claimed is hereinafter In the accompanying drawings: Figure 1 is a view, in elevation, of a locomotive framepedestal, with an axleand driving box'in vertical transverse section, illustratingan app-licationof my invention; Fig. 2, a vertical central section through the same and Figs?) and 4:,view's, taken similarly to' Figs. 1 and 2, respectively, illustrating a structural modification, v

In the-practice of my invention, referring descriptively to the specific embodiment thereof which is herein exemplified, and first to Figs. 1 and 2, the driving boxes, 4, adjoining the driving wheels, 6, which are fixed on opposite ends of the driving axle, 8, are provided with.- the usual journal bearings, 4, and oil cellers, e and are fittedin the pedestal aws, 3, of the side frame members,-

Which connect the upper and lower frame rails, 1 and 2, thereof, between wedges, 4, and shoes, 4 in the ordinary manner. The open spaces between'the sect-ions of the lower frame rails, 2, are spanned by pedestal ties, 5, suitably connected to the lower frame rails.

The portion of the weight of the locomotive which is carried on the driving axle, 8, is transmitted to the driving boxes, 4,

' through springs, 9, which bear, centrally,

on seats, 10*, at the ends of a rigid yoke or spring supporting beam, 10, extending transversely of the locomotive, and adapted Specificationof Letters Patent.

Patented May 2,1922.

Application filed August 18, 1921. Serial m5. 493,299.

to move vertically, but" not laterally, relatively to the side frame members. It will, of course, be understood that the springs are connected, by hangers at their ends, to the side frame members, either directly or through the intermediation of equalizers, in the ordinarymanner. The springs sup-portmg beam, 10, is guided, in its vertical move ments, by guide lugs, 10 projecting downwardly from its body, and adapted to fit, with easy working clearance, against the upper frame rails, 1, or rubbing plates secured thereon. 7'6

The ends of the supportingbeam, 10, are supported upon the driving boxes, '4, through the intermediation of vibratable rockers, 11, which are of the three point suspension type, and are of inverted U sect-ion, their legs extending downwardly on oppo site sides of the upper frame rails, l, and fitting. in recessed seatsfin the tops of the driving boxes, and theirupper portions connectingtheir legs, constituting the bearings onwhich the supporting beam, '10, itself rests, rollers, 12, being preferably, inter posed between the rockers and the beam;

In the operation of a locomotive engine in I which a construction embodying the esseir tial features of that above described, or

their equivalents, is applied, when one of,

the driving wheels is nann deflected, in either direction, from its normal position, relatively to the adjacent side frame, which deflection is effected by the resistance opposed by the contact of the outer track rail with the flange of the adjacent driving wheel, upon the passage of the locomotive from a tangent to a curve of the track, the accompanying lateral movement of the driving box, swings the rocker, 11, in direction similar to that of the movement of-the box. This movement of the rocker, which acts toraise the supporting beam, 10, is resisted by the weight carried by the adjacent end there of, this resistance acting, through the roller 12, and the bearing on the lower end of the the springs, 9, participate in its vertical movement, as the resistance stated is overcome, without disturbance of their relation,

laterally, to the side frame members or equalizer connections.

In the construction illustrated, the resistance is exerted on one side of the locomotive only, the journal at the oppositeend of the axle sliding through its driving box with out instituting any resistance other than lateral journal friction, which, if the joun nal is properly lubricated, will be trifling. As the resistance of the rail decreases, in the passage of the locomotive from a. curve'to a fering therefrom only in the substitution of another form of three point suspension rocker, 11, for the; rocker, 11, of Figs. 1 and 2. The rocker is, in this instance, of upright U section, its legs extending upwardly on opposite sides of the upperframe rail, 1, and

its lower portion, connecting the legs, being provided with a central segmental bearing, 11', extending in a longitudinal plane of the frame, and fitting in a corresponding groove or recess inv the top of the driving box, 4.

A'bearing plate, 12 is inter-posed between the upper ends of the legs of the rocker, I1, and is connected thereto -by' 'bo lts,' 13, and nuts. Two segmental bearings, 12?, 12?,extending in longitudinal planes, of the frame, are formed on the top of the bearing plate,

12 said bearin 's fittin in corres aondinr 7 1D b O grooves or recesses on the lower side ofjthe spring supporting beam, 10.

v The operation of his specific form of my invention in entering and passing from a curve ofthe track,is similar, in all essential particulars, to that of the construction shown in Figs. 1 and 2, and first above described. H

I claim as my invention and desire tose cure by Letters Patent:

1. In a locomotive engine, the combination of aside frame; a driving'box, fittedwith the capacity of relative movement therein a spring supporting beam, which is vertically movable relatively to the driving box; and vibratable means, interposed between the supporting beam and the driving box, for transmitting resistance from one to the other of said members, in planes on the opposite sides of the' frame.

therein; a spring supporting beam, which is. vertically movable relatively to the driving box; and a rocker, extending,1,0n opposite sides of the frame, between the supporting beam and the driving box,"and bearing at two points on one of said members, and at one point on the other member.

. 3. In a locomotive engine, the combination of a side'frame; a driving box, fitted with the capacity of relative movement therein; a spring supporting beam, which is vertically movable relatively to the driving box; and a rocker, of U form, the legs of which extend, onopposite sides of the frame, between the supportingbeam and the driving box, and which'bears at two points on one of said members,and at one point on the other member. j j

4. In a locomotive engine, the combination of a side frame; a driving box, fitted, with the capacity of relative movements, therein a spring supporting beam, which is vertically movable relatively to the driving box a rocker, of U form, the legs of which extend,

on opposite sides of the frame, between the supporting beam and the box, and bear on said drlving box; and a'centr'al'bearmg on the rocker, through whichresi'st-anc'e is transmitted from the driving box 'to the.

s' ilpporti'ng beam and vice versa.

5. In a locomotive engine, the combination of a side frame; a driving box, fitted; with the capacity of relative movement therein; a spring supporting beam, which is Vertically movable relatively to the driving box;

a rocker, of U form, the legs of which extend, I

on opposite sides of the frame, between the supporting'beam and the driving box, and bear on said driving box; and a roller,-inter' posed between a central bearing on the rocker and a bearing on the supporting beam.' 1 y ALFRED W. BRUCE,

iVitnes'ses: i

' J. SNownnN BELL, HELEN R. HARRISON. 

